행복만땅 개발자 IT 개발 메모

레지스트리 편집 화면에서 상단 주소 입력창에 아래 각 입력하여 보이는 목록 삭제

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run

레지스트리 편집 창은 윈도우 명령 창에서 regedit 입력 실행

(윈도우 로고 / 실행 / regedit)

잘못 만지면 컴퓨터가 켜지지 않을 수 있기 때문에 정확히 위에 있는 경로에서만 삭제 필요

윈도우 로그인이 잘 되다가 

윈도우 계정으로 로그인이 되어있지 않아 보안 경고가 떴고

그래서 윈도우 계정으로 로그인 했더니

이후 외부에서 원격 접속으로 해당 PC가 로그인 되지 않을 때

모두 윈도우 제조사 거지 같은 정책 때문.

윈도우 계정 로그인 시

기존 계정 로그인이 사라지고 핀번호를 만들라고 한다.

일단 만들고 PIN번호로 로그인 후

1.

명령어 창에서 로그인 입력, 로그인 옵션 실행

2.

추가 설정에서 

보안을 강화하려면 이 장치의... 어쩌구 거기 부분에서 끔 선택

3.

그리고 해당 윈도우 계정 로그아웃

4. 다시 로그인 하려고 하면

로그인 옵션이 하나 더 보이는데, 여기서 윈도우 계정 비밀번호로 로그인

(핀번호로 로그인 X)

5. 그리고 다시 원격 접속 시도

==> 정상 로그인 

윈도우 탐색기 주소창에 아래 주소 복사 붙이기

%UserProfile%\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets

해당 경로에 있는 것이 모두 이미지 파일. 쉽게 볼 수 없도록 이미지 파일 형태로 저장되어 있지 않은데

윈도우 > 실행 > cmd(관리자 권한으로 실행) 

해당 창에서 다음 명령어 입력

cd %UserProfile%\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets

그리고 아래 명령 입력 

ren *. *.png

확장자가 없는 모든 파일(파일명이 점 뒤에 아무것도 없는 파일)에 확장자 png 붙이라는 명령 실행한 결과 

이제 윈도우 탐색기에서 점(.) 뒤에 png가 붙어서 더블 클릭하여 이미지 확인 가능

여기서 보기 싫었던 파일은 삭제가 아닌, 예쁜 이미지를 보기 싫었던 파일명으로 변경하여 덮어쓰기 

마지막으로 .png 붙였던 확장자를 다시 제거(안그럼 잠금화면 이미지 다 나오지 않음)

ren *.png *.

그리고 잠금화면 실행하면 짜잔 ~ :D ㅎㅎㅎ 

바탕화면 잠금화면 이미지는 해당 경로에 없고, 찾아보려고 했으나 포기  ㅎㅎ

분명한 것은 %UserProfile%\AppData\Local\ 경로에 바탕화면 잠금화면 이미지 없음

● 파일명 길이 출력

Get-ChildItem | ForEach-Object {
       $fileName = $_.Name
       $length = $fileName.Length
       Write-Output "파일: $fileName, 길이: $length"
}

● 특정 파일명 길이 가지고 있는 텍스트 파일 찾기

Get-ChildItem *.txt -Recurse -File | Where-Object {
       $_.Name.Length -gt 63 -and $_.Name.Length -lt 65
} | Select-Object Name, Length

접속 주소가 같은데, 서버가 바뀐 경우 ssh RSA 키 충돌로 접속이 되지 않을 때 

- ssh-keygen -R [접속지 주소]

이를 통해 해결되지 않을 때 아래 폴더에 있는 파일을 백업하고 삭제하면 접속 가능

C:\Users\[사용자계정]\.ssh\known_hosts

해당 방법 사용 경우, 다른 모든 접속 키 등록 필요

● batch(*.bat) 파일 분기 처리 참고 스크립트

@echo off
chcp 437

 :: BatchGotAdmin
 :-------------------------------------
 REM  --> Check for permissions
 >nul 2>&1 "%SYSTEMROOT%\system32\cacls.exe" "%SYSTEMROOT%\system32\config\system"

REM --> If error flag set, we do not have admin.
 if '%errorlevel%' NEQ '0' (
     echo Requesting administrative privileges...
     goto UACPrompt
 ) else ( goto gotAdmin )

:UACPrompt
     echo Set UAC = CreateObject^("Shell.Application"^) > "%temp%\getadmin.vbs"
     echo UAC.ShellExecute "%~s0", "", "", "runas", 1 >> "%temp%\getadmin.vbs"

    "%temp%\getadmin.vbs"
     exit /B

:gotAdmin
     if exist "%temp%\getadmin.vbs" ( del "%temp%\getadmin.vbs" )
     pushd "%CD%"
     CD /D "%~dp0
	 
echo.	 
echo http://tmigod.com/
echo IP last update : 2021. 05. 23.
echo.
pause
echo.

● CLI | (Pipeline) 필터링

dir/s/b | find "필터 키워드"

● 대용량 USB exFAT 이 아닌 FAT32로 포멧하기 / PowerShell 실행 후

MSSQL, MariaDB/MySQL, Apache WEB, Apache Tomcat 등 운용 시

해당 서버(또는 PC) 기준 방화벽 설정 

1. 이벤트 뷰어에서 외부 공격은 "응용 프로그램" 눌러서 접속 로그 확인

2. 이벤트 뷰어에서 보안 오류도 분단위 있을 경우 조치

3. 방화벽 인바운드 규칙 > 새 규칙 > 사용자 지정 > 모든 프로그램(기본값) > 모든 프로토콜 / 모든 로컬 포트 / 모든 원격 포트(기본값) > 이 규칙이 적용되는 원격 IP 주소 / 다음 IP 주소 / 추가 > 222.222.222.1 ~ 222.222.222.255 추가 > 연결 차단 > 완료

4. 방화벽 인바운드 IP대역 차단 CLI 

netsh advfirewall firewall add rule name="DDOS 차단" dir=in action=block remoteip=61.221.207.0-61.221.207.255

5. 한국만 허용

netsh advfirewall firewall add rule name="only korean access" dir=in action=allow remoteip=101.79.136.0/21,101.79.32.0/21,14.128.128.0/17,14.129.0.0/16,14.138.0.0/16,14.192.80.0/20,45.112.88.0/21,45.112.96.0/20,45.112.112.0/21,45.112.152.0/21,45.112.160.0/21,45.112.168.0/22,43.230.0.0/22,43.224.104.0/22,43.250.152.0/22,43.251.28.0/22,43.251.68.0/22,43.251.120.0/22,14.206.0.0/16,27.0.236.0/22,27.1.0.0/16,27.35.0.0/16,45.113.44.0/22,45.113.48.0/22,43.230.76.0/22,43.230.80.0/22,43.230.216.0/22,27.160.0.0/12,27.176.0.0/13,27.232.0.0/13,27.255.64.0/19,27.255.96.0/19,36.38.0.0/15,43.246.152.0/22,43.246.180.0/22,27.100.128.0/17,27.101.0.0/16,27.102.0.0/16,45.119.144.0/22,45.120.64.0/22,45.120.68.0/22,103.141.18.0/23,43.241.104.0/22,43.241.108.0/22,43.247.104.0/22,43.247.192.0/22,27.111.96.0/19,27.112.128.0/17,27.113.0.0/17,45.115.152.0/22,1.11.0.0/16,1.16.0.0/14,43.254.244.0/22,39.4.0.0/14,39.16.0.0/12,39.112.0.0/12,42.8.0.0/13,42.16.0.0/12,42.32.0.0/12,43.227.116.0/22,43.227.120.0/22,27.115.128.0/17,27.116.64.0/18,27.116.128.0/17,27.117.0.0/18,27.117.64.0/18,27.117.128.0/18,27.117.192.0/18,27.118.64.0/18,27.118.128.0/17,27.119.0.0/17,27.119.128.0/17,27.120.0.0/18,27.122.128.0/17,43.242.112.0/22,45.117.12.0/22,1.96.0.0/12,1.176.0.0/15,1.201.0.0/16,1.208.0.0/12,1.224.0.0/11,14.0.32.0/19,14.0.64.0/18,14.4.0.0/14,14.32.0.0/11,14.64.0.0/11,43.255.248.0/22,43.255.252.0/22,45.64.140.0/22,45.64.144.0/22,45.64.152.0/22,45.64.172.0/22,42.82.0.0/16,43.228.160.0/22,27.124.128.0/17,27.125.0.0/17,27.126.0.0/18,43.243.216.0/22,103.3.36.0/22,59.186.0.0/15,61.32.0.0/13,61.40.0.0/14,101.53.64.0/19,101.55.0.0/17,103.7.32.0/22,103.7.190.0/23,103.10.216.0/22,103.11.24.0/22,103.11.44.0/22,103.11.56.0/22,103.21.200.0/22,103.25.16.0/22,45.121.164.0/22,45.125.232.0/22,45.126.148.0/22,49.1.0.0/16,49.8.0.0/14,49.16.0.0/12,49.50.0.0/22,49.50.16.0/20,49.50.32.0/19,49.56.0.0/13,49.128.192.0/19,49.142.0.0/16,49.143.0.0/17,58.120.0.0/13,58.138.192.0/18,58.140.0.0/14,58.145.0.0/17,58.146.192.0/18,58.147.176.0/21,58.148.0.0/14,58.180.0.0/16,58.181.0.0/18,58.184.0.0/16,60.196.0.0/15,61.47.192.0/18,61.72.0.0/14,61.76.0.0/15,61.78.0.0/15,61.80.0.0/14,61.84.0.0/15,101.202.0.0/16,101.235.0.0/16,101.250.0.0/16,103.4.48.0/22,103.4.148.0/22,103.4.176.0/22,103.4.180.0/22,103.7.244.0/22,103.8.100.0/22,103.11.128.0/22,103.11.248.0/22,103.22.220.0/22,49.160.0.0/12,49.236.64.0/18,49.238.64.0/18,49.238.128.0/17,49.239.128.0/18,58.224.0.0/12,59.0.0.0/11,59.86.192.0/18,59.151.192.0/18,60.253.0.0/18,60.253.64.0/19,61.4.192.0/19,61.4.224.0/19,61.5.160.0/19,103.5.128.0/22,103.5.144.0/22,103.8.230.0/24,103.9.32.0/22,103.9.128.0/22,103.19.124.0/22,103.23.80.0/21,103.27.128.0/22,103.30.108.0/22,103.30.160.0/22,103.30.204.0/22,45.248.72.0/22,49.246.0.0/18,49.246.64.0/18,49.247.0.0/16,49.254.0.0/16,58.29.0.0/16,59.152.128.0/18,61.14.208.0/22,61.245.176.0/20,61.245.224.0/19,61.247.64.0/18,61.247.128.0/19,61.247.192.0/19,101.1.8.0/21,101.1.32.0/19,103.2.76.0/22,103.2.84.0/22,103.2.92.0/22,103.6.72.0/22,103.6.80.0/22,103.6.100.0/22,103.6.172.0/22,103.10.92.0/22,103.12.248.0/22,103.12.252.0/22,103.13.52.0/22,103.13.160.0/22,103.20.116.0/22,103.24.8.0/22,103.27.148.0/22,103.28.60.0/22,103.28.64.0/22,103.31.180.0/22,45.249.64.0/22,45.249.160.0/22,58.65.64.0/18,58.72.0.0/13,58.84.44.0/22,58.87.32.0/19,58.102.0.0/15,103.62.228.0/22,103.51.168.0/21,103.51.176.0/22,103.51.184.0/21,103.51.192.0/21,103.51.200.0/22,103.51.240.0/20,103.55.188.0/22,103.59.156.0/22,103.206.74.0/23,103.194.252.0/22,103.212.244.0/22,103.212.248.0/22,103.216.202.0/23,103.226.72.0/22,103.226.76.0/22,103.226.96.0/22,103.38.24.0/22,103.49.44.0/22,103.52.200.0/22,103.53.114.0/24,103.60.120.0/22,103.60.124.0/22,103.214.24.0/22,103.214.88.0/22,103.39.36.0/22,103.42.184.0/22,103.43.64.0/24,103.50.40.0/22,103.57.60.0/22,103.215.144.0/22,103.218.156.0/22,103.218.160.0/22,103.43.120.0/22,103.55.35.0/24,103.194.108.0/22,103.212.124.0/22,103.212.220.0/22,103.244.108.0/22,103.247.220.0/22,103.247.232.0/22,103.248.104.0/22,103.251.104.0/22,114.200.0.0/13,115.0.0.0/12,115.16.0.0/13,115.31.96.0/19,115.40.0.0/15,115.68.0.0/16,115.69.96.0/19,110.93.24.0/21,110.93.112.0/20,110.165.0.0/19,110.165.64.0/18,110.172.64.0/18,110.232.96.0/20,112.72.16.0/20,112.72.32.0/19,112.72.128.0/17,112.76.0.0/15,113.60.0.0/16,113.61.0.0/19,113.61.104.0/22,113.130.64.0/19,113.130.128.0/17,113.131.0.0/16,113.192.64.0/18,113.197.80.0/20,113.198.0.0/16,113.199.0.0/17,119.192.0.0/11,119.235.192.0/20,119.235.240.0/21,120.29.128.0/20,116.68.32.0/19,116.68.232.0/21,116.84.0.0/16,116.89.160.0/19,116.90.216.0/21,116.93.160.0/19,116.93.192.0/18,117.110.0.0/15,119.17.0.0/19,119.17.64.0/18,119.18.64.0/18,120.50.64.0/18,120.50.128.0/19,103.230.88.0/22,103.230.112.0/22,103.234.4.0/22,103.241.116.0/22,103.249.28.0/22,103.252.228.0/22,106.96.0.0/13,106.240.0.0/12,111.65.128.0/18,111.67.208.0/20,111.67.224.0/19,112.106.0.0/15,112.108.0.0/16,112.109.32.0/19,112.121.0.0/19,112.121.192.0/18,112.133.0.0/17,112.133.128.0/18,112.136.128.0/17,112.137.176.0/21,112.140.64.0/18,112.140.144.0/21,113.216.0.0/15,114.29.0.0/17,114.29.128.0/18,114.30.0.0/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210.102.96.0/19,210.106.0.0/18,210.106.64.0/19,210.106.96.0/19,210.110.0.0/17,210.110.128.0/17,210.111.0.0/18,210.111.112.0/20,210.111.128.0/19,210.111.160.0/19,210.111.192.0/19,210.111.224.0/19,210.111.64.0/20,210.111.80.0/20,210.111.96.0/20,210.112.0.0/17,210.112.128.0/19,210.112.160.0/20,210.112.176.0/20,210.112.192.0/19,210.112.224.0/19,210.113.0.0/16,210.114.0.0/18,210.114.104.0/21,210.114.112.0/20,210.114.128.0/19,210.114.160.0/19,210.114.192.0/20,210.114.208.0/20,210.114.224.0/19,210.114.64.0/20,210.114.80.0/21,210.114.88.0/21,210.114.96.0/21,210.115.0.0/19,210.115.128.0/19,210.115.160.0/19,210.115.192.0/19,210.115.224.0/19,210.115.32.0/19,210.115.64.0/19,210.115.96.0/19,210.116.0.0/18,210.116.128.0/17,210.116.64.0/18,210.117.0.0/17,210.117.128.0/18,210.117.192.0/18,210.118.0.0/19,210.118.128.0/17,210.118.32.0/19,210.118.64.0/18,210.119.0.0/17,210.119.128.0/18,210.119.192.0/19,210.119.224.0/20,210.119.240.0/20,210.121.0.0/17,210.121.128.0/17,210.122.0.0/16,210.123.0.0/16,210.125.0.0/20,210.125.128.0/17,210.125.16.0/20,210.125.32.0/19,210.125.64.0/18,210.126.0.0/17,210.126.128.0/17,210.127.0.0/19,210.127.128.0/17,210.127.32.0/19,210.127.64.0/18,210.180.64.0/19,210.180.96.0/19,210.181.0.0/19,210.181.128.0/18,210.181.192.0/19,210.181.224.0/19,210.181.32.0/19,210.181.64.0/18,210.204.0.0/16,210.205.0.0/18,210.205.112.0/20,210.205.128.0/18,210.205.192.0/19,210.205.224.0/20,210.205.240.0/20,210.205.64.0/19,210.205.96.0/20,210.206.0.0/15,103.143.176.0/23,103.186.170.0/23,64.188.32.0/20,103.131.164.0/22,165.141.0.0/18,165.141.112.0/20,165.141.128.0/17,165.141.64.0/19,165.141.96.0/20,103.144.30.0/23,103.143.32.0/23,103.140.208.0/22,103.117.0.0/22,103.129.184.0/22,103.109.64.0/22,103.21.188.0/23,103.21.190.0/23,103.37.0.0/22,43.240.236.0/22,103.127.124.0/22,103.126.64.0/22,103.199.100.0/22,103.48.132.0/22,137.59.16.0/22,43.229.112.0/22,103.175.200.0/23,206.219.0.0/18,103.167.230.0/23,103.39.16.0/22,43.243.188.0/22,103.162.180.0/23,103.161.4.0/23,180.189.52.0/22,211.172.180.0/22,124.217.192.0/20,180.210.16.0/21,180.210.24.0/22,180.210.28.0/22,211.172.176.0/22,162.222.172.0/22,211.172.184.0/21,103.159.160.0/23,103.166.222.0/23,103.157.158.0/23,103.153.44.0/23,103.164.78.0/23,103.44.88.0/22,43.225.124.0/22,103.157.208.0/23,160.20.142.0/24,103.156.22.0/23,103.86.44.0/22,203.160.130.0/23,203.191.134.0/23,103.150.62.0/23,103.162.52.0/23,103.150.204.0/23,103.150.160.0/24,103.150.162.0/23,103.146.180.0/23,211.188.104.0/21,211.188.112.0/20,211.188.96.0/21,211.255.128.0/21,211.255.136.0/21,211.255.144.0/20,223.255.192.0/21,223.255.200.0/21,103.145.214.0/23,103.122.144.0/23,180.94.4.0/24,59.150.0.0/21,59.150.100.0/22,59.150.104.0/22,59.150.108.0/23,59.150.110.0/23,59.150.112.0/21,59.150.12.0/24,59.150.120.0/23,59.150.122.0/24,59.150.123.0/24,59.150.124.0/24,59.150.125.0/24,59.150.126.0/23,59.150.128.0/22,59.150.13.0/24,59.150.132.0/23,59.150.134.0/24,59.150.135.0/24,59.150.136.0/24,59.150.137.0/24,59.150.138.0/24,59.150.139.0/24,59.150.14.0/24,59.150.140.0/24,59.150.141.0/24,59.150.142.0/23,59.150.144.0/23,59.150.146.0/23,59.150.148.0/23,59.150.15.0/24,59.150.150.0/24,59.150.151.0/24,59.150.152.0/22,59.150.156.0/24,59.150.157.0/24,59.150.158.0/23,59.150.16.0/23,59.150.160.0/22,59.150.164.0/24,59.150.165.0/24,59.150.166.0/23,59.150.168.0/23,59.150.170.0/24,59.150.171.0/24,59.150.172.0/24,59.150.173.0/24,59.150.174.0/23,59.150.176.0/20,59.150.18.0/24,59.150.19.0/24,59.150.192.0/23,59.150.194.0/24,59.150.195.0/24,59.150.196.0/23,59.150.198.0/23,59.150.20.0/23,59.150.200.0/22,59.150.204.0/23,59.150.206.0/24,59.150.207.0/24,59.150.208.0/20,59.150.22.0/23,59.150.224.0/19,59.150.24.0/21,59.150.32.0/21,59.150.40.0/23,59.150.42.0/24,59.150.43.0/24,59.150.44.0/24,59.150.45.0/24,59.150.46.0/23,59.150.48.0/22,59.150.52.0/23,59.150.54.0/23,59.150.56.0/23,59.150.58.0/23,59.150.60.0/24,59.150.61.0/24,59.150.62.0/23,59.150.64.0/22,59.150.68.0/24,59.150.69.0/24,59.150.70.0/23,59.150.72.0/24,59.150.73.0/24,59.150.74.0/23,59.150.76.0/22,59.150.8.0/22,59.150.80.0/22,59.150.84.0/22,59.150.88.0/22,59.150.92.0/23,59.150.94.0/23,59.150.96.0/23,59.150.98.0/24,59.150.99.0/24,103.67.58.0/23,101.79.0.0/19,101.79.128.0/22,101.79.132.0/22,101.79.136.0/21,101.79.32.0/21,101.79.40.0/22,101.79.44.0/22,101.79.48.0/21,101.79.56.0/22,101.79.60.0/22,101.79.64.0/18,110.4.112.0/22,110.4.116.0/22,110.4.120.0/21,110.4.64.0/19,110.4.96.0/20,113.30.104.0/22,113.30.108.0/22,113.30.112.0/20,113.30.64.0/21,113.30.72.0/21,113.30.80.0/20,113.30.96.0/21,114.141.0.0/21,114.141.12.0/22,114.141.16.0/22,114.141.20.0/22,114.141.24.0/21,114.141.8.0/22,124.217.208.0/20,180.210.0.0/21,180.210.32.0/19,180.210.64.0/18,180.210.8.0/21,182.252.128.0/20,182.252.144.0/22,182.252.148.0/22,182.252.152.0/21,182.252.160.0/21,182.252.168.0/22,182.252.172.0/22,182.252.176.0/22,182.252.180.0/22,182.252.184.0/21,182.252.192.0/18,185.130.49.0/24,103.218.172.0/23,157.66.64.0/23,

- 국가별 IP 대역 / KISA

https://xn--3e0bx5euxnjje69i70af08bea817g.xn--3e0b707e/jsp/statboard/IPAS/ovrse/natal/IPaddrBandCurrent.jsp?nationCode1=KR

- 엑셀 편집, IP 추출

- 파워쉘로 공격 당한 IP만 자동 등록 / 의미는 없음, 해당 IP 차단하면 감지하여 새로운 IP 공격 확인

$DT = [DateTime]::Now.AddDays(-1) # check only last 24 hours

$l = Get-EventLog -LogName 'Security' -InstanceId 4625 -After $DT | Select-Object @{n='IpAddress';e={$_.ReplacementStrings[-2]} } # select Ip addresses that has audit failure 
$g = $l | group-object -property IpAddress  | where {$_.Count -gt 20} | Select -property Name # get ip adresses, that have more than 20 wrong logins

$fw = New-Object -ComObject hnetcfg.fwpolicy2 # get firewall object

$ar = $fw.rules | where {$_.name -eq 'ExternalAttackBlock'} # get firewall rule named 'BlockAttackers' (must be created manually)

$arRemote = $ar.RemoteAddresses -split(',') #split the existing IPs into an array so we can easily search for existing IPs

$w = $g | where {$_.Name.Length -gt 1 -and  !($arRemote -contains $_.Name + '/255.255.255.255') } # get ip addresses that are not already in firewal rule. Include the subnet mask which is automatically added to the firewall remote IP declaration.

$w| %{$ar.remoteaddresses += ',' + $_.Name} # add IPs to firewall rule

* 라우터 또는 별도 방화벽 장비 설정 별도

* 특히 MSSQL 설치 되어 있을 경우 중국발 공격 많이 발생하며 다른 서비스 공격이 없는 것은 별도 방화벽 장비에서 막아서 로그 없을 수 있음

6. 방화벽 설정 결론 

- IP 차단은 끝이 없음

- 포트 다 차단 

- 공격 대상 포트 변경 / 레지스트리 변경은 귀찮, 파워셀 이용 변경 / DOS CLI 환경에서 powershell 입력 실행 후 아래 입력

$portvalue = 13390
Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp' -name "PortNumber" -Value $portvalue 
New-NetFirewallRule -DisplayName 'RDPPORTLatest-TCP-In' -Profile 'Public' -Direction Inbound -Action Allow -Protocol TCP -LocalPort $portvalue 
New-NetFirewallRule -DisplayName 'RDPPORTLatest-UDP-In' -Profile 'Public' -Direction Inbound -Action Allow -Protocol UDP -LocalPort $portvalue

- 서비스 레지스트리 값을 알고 있으면 사용 포트 확인도 가능

Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp' -name "PortNumber"

- 변경 포트만 특정 IP에서 접근 허용

① 방화벽 인바운 규칙에서 위에서 파워셀로 추가한 "RDPPORTLatest-TCP-In" 확인하여 더블 클릭

② 영역 탭 클릭

③ 원격 IP 주소에 원격에서 접속할 PC 퍼블릭 IP 입력

④ 등록한 IP 컴퓨터에서 원격 접속 테스트 / OK

tcping.exe download

https://www.elifulkerson.com/projects/tcping.php

tcping -d -s 211.***.***.*** 3389

3389 port open 글자까 뜨지 않으면 

해당 서비스가 없거나 방화벽에서 차단된 상태

-s     : automatically exit on a successful ping

-d     : include date and time on each line

1. CLI(Command line interface) 환경 진입

2. 사용 포트 전체 조회에서 8081 글자가 있는 라인만 검색 

netstat -ano | findstr "8081"

해당 라인 맨마지막 5724 번호가 프로세스 번호

3. 프로세스 죽이기

taskkill /f -pid 5724

끝.

● PIN 비밀번호 초기화를 할 수 없을 때

(자동 로그인 되었는데 관리자 비밀번호는 모르겠고, 비밀번호를 바꾸고 싶을 때는 맨 아래 "비밀번호 초기화" 부분 확인, 1줄만 입력하면 끝)

- 초기화 되지 않는 원인 : 학교 또는 회사 그룹으로 윈도우 설치되었을 때

윈도우 실행, "회사" 쳐서 나오는 메뉴

이 메뉴를 선택하여 보이는 소소 조직이 있다면 해지하면 된다는 글들이 다수

해당 방법으로 해결이 되지 않을 경우

아래 폴더를 어떻게든 지우면 된다

C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc

del 키 눌러지워지면 좋은데, 지우는 방법은 조금 복잡

1. 파일탐색기로 해당 폴더 속성 누르고 뜨는 창에서 "보안" 탭메뉴 선택

2. 거기서 내 로그인 아이디 보이면 선택 후 화면 하단 고급 메뉴 선택

3. 그리고 뜨는 화면에서 파란색 글씨 변경 선택

4. 이어 뜨는 화면에서 "고급" > "지금 찾기" 눌러서 아래처럼 "administrators" 누름 > 그리고 다시 확인 클릭

5. 계속 확인 누르다 보면 아까 보이지 않았던 메뉴 "하위 컨테이너 .." 선택

6. 그리고 적용 후 해당 폴더 삭제하면 PIN 관련 정보가 다 삭제 되어, PIN 누르면 아래처럼 설정할 수 있는 화면 뜸

● 비밀번호 초기화

- 명령 프롬프트라는 검정 화면을 관리자 권한으로 실행 필요

(PIN 번호로만 로그인 하고 현 설정된 관리자 비밀번호 모를 경우도 해당)

- 그 화면에서 "net user"라고 치면 사용자 목록이 뜸

- 로그인 사용자 비밀번호 초기화 대상 확인 후

- "net user J.BHAK 변경비밀번호" 입력하면 비밀번호 재설정 완료

- 비번을 까먹어 진입조차 할 수 없다면 안전모드 또는 USB 윈도우설치 도구를 이용하여 동일하게 CMD 화면 진입하여 위 명령어 치면 동일하게 비밀번호 변경 가능

1. 실행 / cmd 관리자 권한 

2. 사용자 전체 목록 확인

>> net user 

3. 실행 / netplwiz.exe

>> 실 로그인 사용자 확인

4. 사용자 비밀번호 리셋

>> net user [사용자 아이디] [사용자 비밀번호]

5. 사용자 계정 비활성화

>> net user [사용자 아이디] /active:no

6. 사용자 계정 활성화

>> net user [사용자 아이디] /active:yes

7. 비밀번호 해지

>> net user [사용자 아이디] ""

1. cmd 관리자 모드로 실행

2. 공유 폴더 전체 확인

net share 

3. 공유 폴더 삭제

net share /delete "공유이름"

ex. net share /delete C$

- 설치 리눅스 확인 : wsl -l -v

- 설치 리눅스 선택 시작 : wsl -d [설치 리눅스명]

- 설치 리눅스 추가 : wsl --import [설치할 리눅스명] [설치 경로] [추출한 파일 경로/파일명]
> .tar.xz 파일도 압출 풀이 없이 바로 설치 가능  

- 실행 리눅스 종료 : wsl --terminate RockyLinux9

윈도우OS 기반에 리눅스 동작하게 만드는 방법♡

2021년 11월 25일 기준

프로그램을 통해 CLI(Command Line Interface)에서 리눅스 명령어를 실행되도록 하는 방법은 Crontab 등 일부 기능이 특성을 타는 등 쉽지 않은 경우

최근 윈도우에서 제공하는 기능을 이용하여 리눅스를 설치하면 가장 우수한 호환성을 보이며 가상화 설치가 아니라 가장 좋은 성능을 가질 수 있다.

1. Command 명령 입력창 오픈

2. 리눅스 기능 활성화 - Command 명령어 입력

dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart

3. 리눅스 CLI 실행 환경 설치

wsl --install

· 내부적으로 Hyper-V 라는 VM 이미지가 만들어지고 이 안에 우분투가 설치되는 구조
· Hyper-V VM은 Microsoft에서 만든 VM으로 윈도우에 기본 기능

4. Ubuntu 설치 - 윈도우 스토어 실행 - 스토어 계정으로 로그인 필요

5. Ubuntu 설치 - 윈도우용 리눅스 검색 - "Uuntu 20" 선택 설치

6. Ubuntu 설치 - "Uuntu 20" 선택 설치 완료 후 실행

7. Ubuntu 이미지로 직접 설치 경우

· 사용 방법 : wsl --import <고유 배포명> <이미지 설치 위치> <이미지 파일 위치>
· 사용 예시1 : wsl --import Ubuntu-20-test999 C:\WSL\Ubuntu-20.04-test999 C:\Downloads\Ubuntu_2004.2020.424.0_x64.appx
· 사용 예시2 : wsl --import RockyLinux9 c:\DEV\WSL\Rocky9 c:\DEV\WSL\Rocky-9-Container-Base.latest.x86_64.tar.xz

* 윈도우 CLI 온라인 환경으로 Ubuntu 설치 경우

* import 경우 

- 다음 명령어로 설치 확인 가능 : wsl -l -v

- 해당 리눅스 구동 : wsl -d Rockylinux9

8. Ubuntu 설치 - 자동 실행 후 최초 리눅스 계정 설정 

9. Ubuntu 설치 - 윈도우 Command 창에서 우분투 실행

10. SSH 환경 재설정 - 기본 설치된 SSH 예외 특성 노력 지양 & 삭제 후 재설치

sudo apt-get update
sudo apt-get upgrade
sudo apt-get purge openssh-server
sudo apt-get install openssh-server

11. 윈도우10 SSH 기본 포트 방화벽 해지

윈도우 방화벽에서 인바운드 규칙 단일 포트 22 허용

12. 윈도우10 포트포워딩 설정(윈도우10을 통해 내부 Hyper-V Ubuntu 접속)

· 방법 : netsh interface portproxy add v4tov4 listenport=[원격에서 윈도우 붙을 때 쓰는 포트] listenaddress=[원격에서 윈도우 붙을 때 쓰는 아이피] connectport=[가상 우분투 SSH 포트] connectaddress=[가상 우분투 아이피]
· 예시 : netsh interface portproxy add v4tov4 listenport=2022 listenaddress=210.216.***.*** connectport=22 connectaddress=172.18.219.47

* 네트워크 아답터 속성인 vEthernet(WSL) 에서 설정된 IP가 아닌 WSL 실행 후 ifconfig 으로 조회되는 아이피로 설정

* 사전 윈도우 CLI(검정창 command) 환경에서 "ssh localhost" 또는 "ssh [WSL 확인한 IP]"로 정상 접속 확인 필요

* WSL 기본 아이피(2024.06.11 기준)는 172.18.219.47(내부 가상 IP)

13. 포트포워딩 설정 내용 조회 또는 삭제

· 조회 : netsh interface portproxy show all
· 삭제 : netsh interface portproxy delete v4tov4 listenport=22 listenaddress=***.***.***.***

14. 원격 접속 테스트

ssh [계정명]@[윈도우10 아이피]

15. 리부팅 이후 원격 ssh 접속이 되지 않을 경우

- 과거 WSL1 모델은 윈도우 CLI 레벨에서 리눅스 쉘이 가능하여 다이렉트 연결 가능
- 2021년 12월 기준 WSL2 모델에서는 가상환경(Hyper-V) 안에 리눅스가 있어 네트워크 아답터에서 IPv4 설정을 보면 기본적으로 172.24.*.* 가상 아이피 할당
- WSL2 기본 설정은 유동아이피(DHCP) 설정으로 되어 있어 고정 아이피 설정 필요

* WSL 자주 쓰는 명령

끝.